If not installed Thaumcraft, then many errors on Thaumcraft api.

@Pilad

1. Need more description, such as fml logs;
2. The api error is mostly on api provider side. If you tell more then we could look into it.

I've the same errors, it seams to be directly from the thaumcraft api which is included inside a lot of mods. So this is not a Railcraft error, but a thaumcraft error I think...

Or DragonAPI, every API error I've seen in the past two months was caused by DragonAPI.

Again, without any logs this issue will die a silent death.